Sinopec Engineering Construction Co., Ltd. Zhenhai Refining And Chemical 100,000 Tons/Year Polyolefin Elastomer Project Design, Procurement And Construction (Epc) Project General Contracting Epc General Contracting Ball Valve\Fp,Sey,Trub Cl600 Rf(Asme B16.5) Cf8 304/Stl,F304 Pneumatic Dn400 Fireproof And Anti-Static Internal Polishing Tender Announcement